What are the relative merits of 35mm and medium format?
Most professional wedding photography is done in medium format (6×4.5, 6×6, or 6×7 cm) because of its inherent superior technical quality and ease of enlargement production. A larger negative will make inherently sharper enlargements. The 35mm negative is 3.6×2.4 cm and requires a higher enlargement factor for a given print size, so grain and focus errors are much more apparent. Medium format has lots of flexibility for cropping and alignment. It is much easier to retouch blemishes, scars, lines, and pimples in medium because it can be done right on the negative — 35mm is too small for this.
